[en] We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. <ASTROBJ>WASP-94A</ASTROBJ> (<ASTROBJ>2MASS 20550794-3408079</ASTROBJ>) is an F8 type star hosting a transiting planet with a radius of 1.72 ± 0.06 R<SUB>Jup</SUB>, a mass of 0.452 ± 0.034 M<SUB>Jup</SUB>, and an orbital period of 3.95 days. The Rossiter-McLaughlin effect is clearly detected, and the measured projected spin-orbit angle indicates that the planet occupies a retrograde orbit. <ASTROBJ>WASP-94B</ASTROBJ> (<ASTROBJ>2MASS 20550915-3408078</ASTROBJ>) is an F9 stellar companion at an angular separation of 15'' (projected separation 2700 au), hosting a gas giant with a minimum mass of 0.618 ± 0.028 M<SUB>Jup</SUB> with a period of 2.008 days, detected by Doppler measurements. The orbital planes of the two planets are inclined relative to each other, indicating that at least one of them is inclined relative to the plane of the stellar binary. These hot Jupiters in a binary system bring new insights into the formation of close-in giant planets and the role of stellar multiplicity. The radial-velocity and photometric data used for this work are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/A49">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/A49</A>
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Neveu-VanMalle, M.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland marion.neveu@unige.ch
Queloz, D.; Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UK ; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Anderson, D. R.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Charbonnel, C.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Collier Cameron, A.; SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK
Delrez, Laetitia ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Hellier, C.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Lendl, Monika ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Maxted, P. F. L.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Pepe, F.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Pollacco, D.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
Ségransan, D.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Smalley, B.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Smith, A. M. S.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK ; N. Copernicus Astronomical Centre, Polish Academy of Sciences, Bartycka 18, 00-716, Warsaw, Poland
Southworth, J.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Triaud, A. H. M. J.; Kavli Institute for Astrophysics & Space Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA ; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Udry, S.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
West, R. G.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK)
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